The top two rear USB 2.0 ports on my board have quit working. At first I thought it was because I was populating too many of the USB headers on the motherboard cause I just installed an internal USB card reader plus I already had two headers in use and I thought maybe using a certain header disabled some of the rear panel ports. So just out of curiosity I yanked all of the stuff I had on the headers to see if that was the case. Needless to say the top two ports still don't work otherwise I wouldn't be here, lol. Everything USB is enabled in the bios and the only changes recently was the card reader, a new video card and an aftermarket CPU cooler. Running Win 7 Home Premium 64 bit. Any help would be appreciated.

Ok, updated the bios, and took the board out and checked for any signs of burn marks and found none. Assembled it outside of the case and tested it and the top two ports still don't work. So I guess I'll be working out a warranty claim. Thanks for your help.

Well, an update of sorts. Shipped the board in for service...a week later got the board back with the exact same problem. No email, no phone call, no letter discussing the issue or the testing that was done to the board, nothing. Chatted with customer service Friday to find out what the deal was. Turns out the 'warranty center found no issues' and it was recommended that I do more testing. Fine, tore the system back down for a bench test. This time to bare minimum...stock cpu cooler, on board video, no frills. Same problem, top two usb ports don't work. I've reset the bios and tested multiple devices and what I have determined is that the ports in question will power up some devices but absolutely no data transfer or OS activity. Usb laptop light will light up, external hard drive and DVD drive will power up and my phone will charge via usb data cable on these ports. They won't charge my mp3 player and won't power up an external floppy or a usb thumb drive. So yeah, as soon as I can get access to customer service again, I'm gonna attempt yet another service claim. I think this time I'm gonna include explicit description of the issue cause they obviously overlooked it the first time.